Unique ID generation bug with invalid files using duplicated ids

As I understand it, the unique ID is supposed to be unique for each object in the scene. However, here is how it's implemented in the code:

const COLLADAFW::UniqueId& Loader::getUniqueId( const COLLADABU::URI& uri, COLLADAFW::ClassId classId ) { URIUniqueIdMap::iterator it = mURIUniqueIdMap.find(uri); if ( it == mURIUniqueIdMap.end() ) { return mURIUniqueIdMap[uri] = COLLADAFW::UniqueId(classId, mLoaderUtil.getLowestObjectIdFor(classId), getFileId(uri)); } else { return it->second; } }

I.e. it's mapped just by url, ignoring the class type. So if the file has a mesh and a node named in the same way for example, they will both end up with the same unique id. Also the second object will report wrong class. Example file can be found in three.js:
http://threejs.org/examples/#webgl_loader_collada_keyframe

Start by locating Loader::getUniqueId and inspect how mURIUniqueIdMap is keyed and how UniqueId stores its class information. Reproduce the issue with the three.js webgl_loader_collada_keyframe example, then verify that objects sharing a URI receive distinct IDs with the correct class type.